A box has a length of 15 in., a width of 7 in., and a height of 9 in. If Tara plans to cover the box with wrapping paper, how much wrapping paper will she need?

We have to calculate the area of the box.

area (box) = 2 (lenght x width) + 2 (lenght x height) + 2 (width x height)

area (box) = 2 (15 in x 7 in) + 2 (15 in x 9 in) + 2 (7 in x 9 in) =

=2 (105 in²) + 2 (135 in²) + 2 (63 in³) = 210 in²+270 in²+126 in²=606 in².

Answer: she need 606 in² of wrapping paper.